Add Methods to Compute Jacobian Matrices

[wdu9]

Please ensure your pull request adheres to the following guidelines:

• Tests for new functionality/models or Tests to reproduce the bug-fix in code.
• Updated documentation of features that add new functionality.
• Update CHANGELOG.md with major/minor changes.

[codecov-commenter]

Codecov Report

Base: 72.81% // Head: 73.56% // Increases project coverage by +0.74% 🎉

Coverage data is based on head (5d37ccb) compared to base (20645e2).
Patch coverage: 99.27% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1185      +/-   ##
==========================================
+ Coverage   72.81%   73.56%   +0.74%     
==========================================
  Files          72       72              
  Lines       11803    11941     +138     
==========================================
+ Hits         8594     8784     +190     
+ Misses       3209     3157      -52     

Impacted Files	Coverage Δ
HARK/ConsumptionSaving/ConsIndShockModel.py	86.50% <99.23%> (+7.03%)	⬆️
...nsumptionSaving/tests/test_IndShockConsumerType.py	79.01% <100.00%> (+0.46%)	⬆️

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[wdu9]

@Mv77 @AMonninger A Could you guys take a look at this when you get the chance?

[AMonninger]

Looks good to me!
(I like the comments in the code, they make it easy to follow)

[wdu9]

Looks good to me! (I like the comments in the code, they make it easy to follow)

Just updated the documentation to be clearer in the calc_jacobian function. In particular, the fake news algorithm is much clearer now.

[AMonninger]

Looks good to me!
Minor Comments:

• In ConsIndShockModel.py line 2676: "Jacobian Matrix ia TxT square Matrix" --> "ia" instead of "is a"
• In ConsIndShockModel.py line 2711: Remove commented line